Cable Size Calculation

Easy. → British Standard 7671.

For each size, type and cross-section of cable, maximum permissible voltage drop (in Volts/km/Ampere) is given either in the Standards or in manufacturers' catalogues. Please refer to them. Now, Standards also fix the maximum permissible voltage drop at the load terminals. Select a cable size such that the voltage drop offered by the cable for the given type, size, cross-section and length of the cable is within the limits specified.

But, please remember to calculate this voltage drop not only for steady-state full-load conditions, but also for transient (starting time) conditions.

Or please mail me your mail ID thro this forum's mailbox so that I can send you a specimen cable sizing calculation.

I can calculate, but i dont know about you. So dont mention as we. Do you know what is voltage drop? what is the relation between the voltage and cable size?...how is the calculation of cable size?...what are the parameters required for the calculation?.......if you dont know all those above, you are not qualified to use this forum.